Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Shares At Cost [Member]	Distributions in Excess of Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]
Balance, beginning at Dec. 31, 2011	$ 1,072,595		$ 911	$ 1,811,349	$ (140,018)	$ (633,854)	$ (11,712)	$ 45,919
Issuance of Common Stock, Net of Issuance Costs	17,913		15	17,898
Stock Based Compensation Activity	314		4	528		(218)
Conversion of Units to Common Stock				99				(99)
Reallocation - Additional Paid in Capital				(116)				116
Preferred Dividends	(4,762)					(4,762)
Net Income (Loss)	1,055					1,262		(207)
Reallocation - Other Comprehensive Income							(15)	15
Other Comprehensive Income	588						555	33
Balance, ending at Mar. 31, 2012	$ 1,087,703		$ 930	$ 1,829,758	$ (140,018)	$ (637,572)	$ (11,172)	$ 45,777